On 10/05/2012 04:33 PM, Jiri Slaby wrote: > Hi, > > I'm getting this warning while running qemu-kvm 1.2.rc1 on the top of > 3.6.0-next-20121001: > WARNING: at virt/kvm/kvm_main.c:1325 kvm_release_pfn_clean+0x70/0x80() > Hardware name: To Be Filled By O.E.M. > Modules linked in: nls_cp437 vfat fat dvb_usb_dib0700 dib0090 dib7000p > dib7000m dib0070 dib8000 dib3000mc dibx000_common microcode > Pid: 11848, comm: qemu-kvm Tainted: G W > 3.6.0-next-20121001_64+ #70 > Call Trace: > [<ffffffff8107f19f>] warn_slowpath_common+0x7f/0xc0 > [<ffffffff8107f1fa>] warn_slowpath_null+0x1a/0x20 > [<ffffffff81004cd0>] kvm_release_pfn_clean+0x70/0x80 > [<ffffffff81027ac6>] paging64_page_fault+0x686/0x830 > [<ffffffff81024745>] ? paging64_gva_to_gpa+0x35/0x80 > [<ffffffff81021121>] kvm_mmu_page_fault+0x31/0x100 > [<ffffffff81040e81>] handle_exception+0x231/0x3d0 > [<ffffffff81041fbc>] vmx_handle_exit+0xcc/0x780 > [<ffffffff8101be44>] kvm_arch_vcpu_ioctl_run+0x444/0xf60 > [<ffffffff81017117>] ? kvm_arch_vcpu_load+0x57/0x1b0 > [<ffffffff81005302>] kvm_vcpu_ioctl+0x472/0x610 > [<ffffffff811aa36b>] ? fsnotify+0x24b/0x340 > [<ffffffff8117d609>] do_vfs_ioctl+0x99/0x580 > [<ffffffff810b620b>] ? pick_next_task_fair+0x13b/0x1a0 > [<ffffffff810b4f68>] ? __enqueue_entity+0x78/0x80 > [<ffffffff81010114>] ? kvm_on_user_return+0x64/0x70 > [<ffffffff8117db40>] sys_ioctl+0x50/0x90 > [<ffffffff816a46e2>] system_call_fastpath+0x16/0x1b > > I.e. is_error_pfn(pfn) is true. Jiri, thanks for your report! This is a known bug which can be fixed by this patch: https://lkml.org/lkml/2012/9/21/46 But this patch need be improved, i will post the new version after full test. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
